package J1_15;

public class J115task2 {
    public static void main(String[] args) {
        for (int i=1;i<=100;i++){
            if (i%2==0){
                System.out.printf("\t"+(i*i/2));
            }
            else
                System.out.printf("\t"+((i*i-1)/2));
        }
    }
}
